JPH064532Y2 - Battery connection mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Use of the Invention] The present invention relates to a storage battery connection mechanism of a storage battery cassette type charging tool.

[Background of the invention]

Generally, charging tools are divided into a storage battery built-in type in which the storage battery is built in the tool body and a storage battery cassette type in which the storage battery is removable. The present invention relates to a storage battery cassette type charging tool that is currently in the mainstream.

A conventional example will be described with reference to FIG.

The power of the storage battery 6 is supplied to the main body 8 via the connection terminals 7a and 7b. At this time, when a large current flows through the connection terminals 7a, 7b, the connection terminals 7a, 7b generate remarkably heat.

In a charging tool, work of applying an overload such as flowing a large current is often used. Therefore, there is a problem that the outer frame 9 is melted by the heat of the connection terminals 7a and 7b.

Conventionally, therefore, a high-grade material having a high heat distortion temperature has been used as the material of the outer frame 9. In this case, there is a problem that the cost becomes high.

[Purpose of device]

An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, and to provide a storage battery connecting mechanism for a charging tool which is inexpensive and has a safe outer frame that does not melt.

[Outline of device]

The present invention focuses on the fact that the material has a restoring force when bent, and devises the shapes of the heat insulating material and the outer frame so that the heat insulating material can be easily attached to the outer frame and is hard to drop.

[Example of device]

 1 and 2 show an embodiment of the present invention.

The storage battery 1 is covered by a storage battery case 1a and has terminals 1b.1c in contact with the connection terminals 3a.3b of the main body 2.
The electric power of the storage battery 1 is supplied to the main body 2 via the connection terminals 3a and 3b.

Between the connection terminals 3a.3b and the outer frame 4, there are heat insulating materials 5a.5b.
Is installed. The heat insulating materials 5a and 5b are paired symmetrically, but since they have the same relationship with the outer frame 4, only one of them will be described.

The outer frame 4 is formed with a groove 4a into which the heat insulating material 5a is inserted. The heat insulating material 5a to be inserted into the groove 4a is provided with a cut portion 5c. The width A of the end portion where the cutout portion 5c is provided is
It is slightly wider than the width C of the groove 4a of the outer frame 4. The width B of the other end of the heat insulating material 5a is slightly smaller than the width C of the groove 4a of the outer frame 4. Therefore, when the heat insulating material 5a is inserted into the groove 4a of the outer frame 4, the width A of the heat insulating material 5a is reduced to the width C of the groove 4a. However, since the heat insulating material 5a is provided with the cutout portion 5c, it can be easily inserted into the groove 4a. Then, the inserted heat insulating material 5a tries to spread to the width A before the insertion, but the groove 4a
Is blocked by walls 4b.4c. Since the force of the heat insulating material 5a to spread is acting, the heat insulating material 5a does not easily fall from the groove 4a.

[Effect of device]

According to the present invention, by providing the heat insulating material with the notch,
The heat insulating material can be easily attached to the outer frame without using an adhesive or the like, and is hard to drop from the outer frame. Therefore, the number of man-hours for mounting the heat insulating material can be reduced, and it is possible to supply an inexpensive and safe storage battery connecting mechanism for the charging tool in which the outer frame does not easily melt.

[Brief description of drawings]

1 and 2 show an embodiment of a charging tool according to the present invention. FIG. 1 is a side view in vertical section of a storage battery connecting portion, and FIG.
FIG. 3 is a perspective development view of the storage battery connecting mechanism, and FIG. 3 is a vertical cross-sectional side view of a storage battery connecting portion according to a conventional example. 1 is a storage battery, 3a.3b is a connection terminal, 4 is an outer frame, 4a is a groove, and 5a.
5b is a heat insulating material, and 5c is a notch.

Claims (2)

[Scope of utility model registration request] 1. A charging tool driven by electric power of a removable storage battery supplied through a connecting terminal, wherein a groove is provided in the outer frame of the charging tool in the vicinity of the connecting terminal. A storage battery connecting mechanism, wherein a heat insulating material is inserted into the groove so that the heat of is not transferred to the outer frame. 2. The heat insulating material is formed such that the lateral width of one end thereof is slightly larger than the lateral width of the groove and the lateral width of the other end thereof is slightly smaller than the lateral width of the groove, and substantially the central portion of the one end. The storage battery connecting mechanism according to claim 1, wherein a notch is provided in the heat insulating material so that the heat insulating material has elasticity.